/Engine/Source/Runtime/UMG/Public/Blueprint/UserWidget.h
FCursorReplyOnCursorQuery(FGeometry MyGeometry, const FPointerEvent& CursorEvent) const; TODO virtual bool OnVisualizeTooltip(const TSharedPtr& TooltipContent); Called when Slate detects that a widget started to be dragged.
void OnDragDetected ( [FGeometry](API\Runtime\SlateCore\Layout\FGeometry) MyGeometry, const [FPointerEvent](API\Runtime\SlateCore\Input\FPointerEvent) & PointerEvent, [UDragDropOperation](API\Runtime\UMG\Blueprint\UDragDropOperation) *& Operation )